#3151BC#3151BC

#3151BC is a mid, vivid blue. Relative luminance 0.102; OKLCH L 47.6% C 0.173 H 266.9°. Best body text is #FFFFFF at 6.92:1 contrast (WCAG AA passes).

Color values

HEX	#3151BC
RGB	rgb(49, 81, 188)
HSL	hsl(226, 59%, 46%)
HSV	hsv(226, 74%, 74%)
CMYK	cmyk(73.9%, 56.9%, 0%, 26.3%)
CIE-LAB	lab(38.14, 26.11, -59.74)
CIE-LCH	lch(38.14, 65.20, 293.60°)
OKLab	oklab(47.65% -0.0092 -0.1723)
OKLCH	oklch(47.65% 0.173 266.9)
XYZ	xyz(13.2830, 10.1672, 48.8296)
Luminance	0.1017 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3151BC #BC9C31

analogous

#3197BC #3151BC #5731BC

triadic

#3151BC #BC3151 #51BC31

tetradic

#3151BC #BC3197 #BC9C31 #31BC57

square

#3151BC #BC3197 #BC9C31 #31BC57

split-complementary

#3151BC #BC5731 #97BC31

monochromatic

#18275B #243C8B #3151BC #5774D3 #889CE0

Accessibility & contrast

On white

6.92

#3151BC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.03

#3151BC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3151BC

6.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3151BC	#FFFFFF	#000000	##FFFFFF
##3151BC	1.00	6.92	3.03	6.92
#FFFFFF	6.92	1.00	21.00	1.00
#000000	3.03	21.00	1.00	21.00
##FFFFFF	6.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0060C0

Deuteranopia (green-blind)

#0054BA

Tritanopia (blue-blind)

#006B7E

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #3151bc;
/* rgb */ color: rgb(49, 81, 188);
/* oklch */ color: oklch(47.6% 0.173 266.9);

Tailwind

colors: {
  custom: {
    50: '#7d81d1',
    500: '#3151bc',
    950: '#000000',
  },
}

SCSS

$custom: #3151bc;
$custom-light: #7d81d1;
$custom-dark: #000000;

JSON

{
  "hex": "#3151bc",
  "rgb": {
    "r": 49,
    "g": 81,
    "b": 188
  },
  "hsl": {
    "h": 226.187,
    "s": 58.65,
    "l": 46.471
  },
  "oklch": {
    "l": 0.47646,
    "c": 0.17254,
    "h": 266.9
  },
  "luminance": 0.10169
}

Semantic roles & 50–950 ramp

primary

#3151BC

secondary

#CAB87F

accent

#BE46E2

background

#F8F7FC

surface

#EFEEF9

border

#CAC9D2

text

#0B0A14

muted

#7C7C82

Preview Lab

Preview with #3151BC

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →